30 Jan 2007, 11:45
The only Pulsar I have ever had die on me was a P4 AutoSet Executive [out of approximately 150 watches]. One day it worked fine, the next, totally dead; no artifice at my disposal could revive it. I would say all Pulsars are pretty well-built, but you have to remember, we are a third of a century out on the ageing curve, and we are seeing failure modes that Time Computer never did, because the watches didn't have time to get very old [5 years or so, at most], before they closed their doors forever. I would say, the best indicator of probable future lifespan is how clean the module is; in particular, there should be little or no trace of deterioration of the paper labels in the battery compartments [especially the side that says "+ side up"]. That side had the battery seal down, and if there was any leakage, the corrosive liquid would be released directly onto the paper, which would then begin to disintegrate [the degree of deterioration can give you a rough idea how long the process has been going on]. The liquid would also begin to give off equally corrosive vapors, which would then diffuse throughout the case, setting in motion all manner of slow, but destructive, chemical processes [I have seen the gold traces actually peeling off the ceramic circuit board]. Solder breaks down, and even the wire bonds can be eaten through, causing open circuits. My guess is, any watch left for ten or twenty years, with a set of leaking batteries sealed in the case, is certainly ultimately doomed to some sort of chemically-induced electrical breakdown. If it weren't for that [and the ever-present danger of static electricity], most Pulsars might have made it to their hundredth birthday, as their designers intended; as it is, maybe a few percent will, if we're to judge by the relative number of working specimens available now. The module is the heart and soul of the watch, so it's worth being a bit picky about what you buy. Then again, if you're likely to start biting your nails, or losing sleep worrying about whether your watch is still working or not, vintage LED collecting might not be the best hobby of choice. Because of their age, there is a certain definable element of risk to owning one; you have to make a personal decision as to whether or not to assume that risk. I have never regretted doing so. For me, the bottom line was always "they are just SO cool...".